67 



Found on the fossil bodies, such as echinites, belemnites, &c. 

 of the environs of Paris. 



2. Fl. reticulata. Formed of moderately thick fronds, with cells on 



both sides ; the cells long oval ; the septa rather prominent ; 

 and the mouth rather transverse. Desmarets and Le Sueur, 

 Ball, des Sc. 1814, p. 53, PI. ii. fig. 4. 



Found in the sands of the environs of Valogne, with the bacu- 

 lites, belemnites, &c. 



3. Fl. quadrata. Incrusting and radiated ; cells formed in squares 



or parallelograms. Desmarets and Le Sueur, Bull, des Sc. 

 1814, p. 53, PL ii. fig. 10. 

 On the cast of a fossil vivalve. 



4. FL crassa. Incrusting ; thick ; with septa prominent, but de- 



pressed upwards ; the cells short ; a large crescent-formed 

 mouth. Desmarets and Le Sueur, Bull, des Sc. 1814, p. 53, 

 PL ii. fig. 1 . 

 On a fossil oyster of Grignon. 



5. FL cretacea. lucrusting ; thick ; with ovately oblong cells. 



Desmarets and Le Sueur, Bull, des Sc. 1814, p. 53, No. G, 

 PL ii. fig. 3. 

 On a fossil murex in the environs of Plaisance. 



6. FL utricularis. Incrusting ; with rather depressed ovate cells, 



widest behind ; the mouth small, and placed forwards. Des- 

 marets and Le Sueur, Bull, des Sc. 1814, p. 54, PL ii. fig. 8. 

 On fossil echinites of the chalk. -f* 



In addition to these, M. Lamouroux particularizes the 

 following : 



7. FL bifurcata. Foliaceous ; the fronds dichotomous, with bifur- 



cated summits, and set with hexagonal cellules on both sur- 

 faces. Desmarets and Le Sueur, Bull, des Sc. 1814, p. 53, 

 PL ii. fig. 6. 



8. FL microstoma. Incrusting ; thin ; with oval, slightly convex, 



indistinct cells ; the mouth very small and round, and placed 



f Histoire des Polypiers coralligenes flexibles, vulgairement 

 nommes Zoophytes, par J.V.F. Lamouroux, D.E.S. Caen, 1816. 



